Robert Horst Member

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  • Robert Horst

    Post
    (Quote from seven_of_twenty)

    But IR radiated from the heater to the mesh is not the same as the heat generated by the reaction and conducted through the mesh. If the mesh temperature is all that is important, then any version with high COP should…
  • Robert Horst

    Post
    Mizono did not have a good answer to Question 8 above (heat after death).

    In most of his papers, the graphs only show data while the heater remains on. It would be very informative to cycle the heater on and off (once an hour or day or week depending…
  • Robert Horst

    Post
    (Quote from Bob#2)

    I was wondering the same thing.

    Maybe the the key is the process and particular temperatures used to degas it, not the impurities themselves. It could be that the temperature cycles condition the mesh to allow the reaction to take…
  • Robert Horst

    Post
    As the pressure increases, more of the heat transfer from the heater to the mesh is through convection and less through radiation. If the IR intensity is controlling the reaction rate, higher pressure should reduce the rate.

    The vacuum inside the…
  • Robert Horst

    Like (Post)
    I've been looking up emmisivity spectra of various heating element materials.


    Definition of spectral emissivity: (https://www.shimadzu.com/an/ft…/letter13/emissivity.html)
    "Emissivity" is defined by Japanese industrial standard JIS Z 8117 1) as "the…
  • Robert Horst

    Post
    Here is another difference. Notice the big difference in the color of the sheath heater referenced in the Mizuno Rothwell paper and a screenshot of the heater in the Deneum video. The sheath heater is a much darker color, making it a better blackbody…
  • Robert Horst

    Like (Post)
    (Quote from Curbina)


    Yes, probably streamed. The initial testing and calibration may not be streamed live, but the data will be posted as near to real time as possible.
  • Robert Horst

    Post
    Here is another thought to help determine the importance of heat vs. IR radiation of the mesh.

    Use a solid state relay to pulse the power to the heater and/or Halogen bulb. Run it at constant power, say 100W and measure the heat output. Then pulse it…
  • Robert Horst

    Post
    (Quote from Paradigmnoia)

    Excellent suggestion.

    If this shows that you cannot run it at high enough power, you could use the metal pipe of the reactor as one of the electrodes (neutral if AC or negative/GND if DC). Then the bulb could be clamped or…
  • Robert Horst

    Post
    Here is an idea for a heater for the Mizuno replications.

    First, there are several reasons to think that the heater function is not just to heat the Nickel mesh.

    1. If heat was the only thing required, once excess heat starts, the mesh would be…
  • Robert Horst

    Like (Post)
    (Quote from gerold.s)

    I'm a bit sorry to complicate this seemingly endless argument, but some assumptions made in this discussion need questioning:
    The thermal conductivity of Deuterium is the highest of any conventional gas, and is nearly 6 times that…
  • Robert Horst

    Post
    A 30V supply will not be enough for some sheath heaters, and cannot get to the 500W that Mizuno used in any case.

    You might consider a Variac instead. These are electrically quieter than switching supplies or triac dimmers because the variation is…
  • Robert Horst

    Post
    For the current shunt, you usually want to pick one rated just a little above the max current you need to measure in order to get a high enough voltage to minimize noise. Using a 100A 75 mv shunt to measure 1 amp gives you a reading of just .75 mv.

  • Robert Horst

    Replied to the thread Woodpecker, proof of concept.
    Post
    To tell where the radiation is coming from, you might consider building a simple cloud chamber like the one I suggested a while ago in another thread.

    Here is a simple DIY cloud chamber using alcohol and dry ice:
  • Robert Horst

    Post
    (Quote from THHuxleynew)

    To measure high currents, you need to put a low resistance shunt in series with the load, otherwise the shunt will burn up. Shunts may be specified in amps-per-volt or max current plus measurement voltage instead of milliohms. …
  • Robert Horst

    Replied to the thread Woodpecker, proof of concept.
    Post
    In a previous thread, I mentioned the potential problem of electrostatic fields attracting charged radon byproducts and increasing GM counts. See:
    MacGyver (aka JohnyFive) LENR experiment

    Is it possible that this experiment builds up a static charge…
  • Robert Horst

    Post
    (Quote from nickec)

    This supplement is the first I have seen with temperature measurements along the length of the reactor. This shows an interesting temperature profile with higher T over mesh, but a sort of flat profile under it.

    I am wondering if…
  • Robert Horst

    Post
    (Quote from THHuxleynew)

    What about the heater wires? Copper is an excellent thermal conductor. If one end of those leads is at 380C and the other end is at 20C, much of the total length will be warm. Jed, do you know what gauge wire was used? To do…
  • Robert Horst

    Like (Post)
    (Quote from JedRothwell)


    Jed, I understand that you are frustrated with answering what you think are ridiculous questions, but table 1 only shows a set of pressures on each day. It doesn't say anything about the intraday history of the pressure after…
  • Robert Horst

    Replied to the thread Woodpecker, proof of concept.
    Post
    You might consider using plasma cutter tips for the electrode. Here is a very inexpensive ($20) plasma cutter that includes many replacement nickel-plated copper tips.

    https://www.amazon.com/PT-31-L…s=plasma+cutter+electrode